Platform Engineer

Position Description

At CGI, you’ll help shape the future of secure, scalable digital platforms that power critical services across the UK. As a Platform Engineer, you will play a central role in strengthening high-performance environments that enable agile delivery and continuous innovation initially for our major UK Government and Justice clients. You will take ownership of complex platform challenges, collaborate closely across multi-disciplinary teams, and apply creative problem-solving to drive automation, reliability, and resilience. Supported by a community of experts, you will contribute to modernising platforms that make a real impact while evolving your skills in an environment that values curiosity, initiative, and continuous growth.

CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK ‘Best Employer’ by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you’ll be part of an open, friendly community of experts. We’ll train and support you in taking your career wherever you want it to go.

Du

e to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance. This is a hybrid position with very occasional travel to one of our client’s sites across the UK.

Your future duties and responsibilities

In this role, you will maintain and enhance secure, resilient, and scalable platform environments that underpin continuous delivery for multiple teams. You will take ownership of platform health, proactively identifying improvements, strengthening automation, and ensuring the reliability and performance of core systems. Working closely with developers, security specialists, and infrastructure teams, you will help streamline CI/CD pipelines, embed secure-by-design practices, and support the rapid deployment of high-quality applications.

You will contribute ideas, trial new approaches, and be supported by a collaborative community as you help drive forward platform innovation, operational excellence, and continuous improvement.

Key responsibilities include:

• Lead & Innovate: Configure, manage, and optimise platform infrastructure to ensure high availability, scalability, and resilience.

Develop & Deliver: Build automation for provisioning, deployments, remediation, and system maintenance using IaC and CaC.

Monitor & Enhance: Implement advanced monitoring, analyse performance metrics, and optimise system capacity.

Secure & Strengthen: Embed security controls throughout environments and CI/CD pipelines, ensuring compliance and automated vulnerability detection.

Collaborate & Enable: Work with developers and security teams to streamline deployments and integrate secure DevSecOps practices.

Resolve & Improve: Lead incident triage, troubleshoot issues, and introduce automated remediation where possible.

Explore & Evolve: Research new technologies and integrate modern practices to uplift platform performance and reliability.

Required Qualifications To Be Successful In This Role

To succeed, you will bring hands-on experience in platform engineering or DevSecOps, with strong knowledge of cloud platforms, IaC, automation tooling, and secure development practices. You should be comfortable working across cross-functional teams, contributing to continuous improvement, and supporting mission-critical environments.

You should have:

• Experience in platform engineering, DevSecOps, or similar roles.

Strong understanding of public cloud platforms such as Azure, AWS or GCP. Certifications in these platforms would be an advantage.

Proficiency with container tools (e.g., Docker, Kubernetes, Docker Swarm) and associated tools such as Helm and ISTIO.

Experience with IaC tools (Terraform, ARM Templates, AWS CDK, etc).

Experience with CI/CD tools (Azure DevOps, GitHub Actions, Jenkins) and good working knowledge of Git concepts and practices.

Knowledge of monitoring technologies (For example Prometheus, Grafana, Dynatrace).

Proficiency in scripting (Python, Bash) and Configuration-as-Code tools (e.g., Ansible).

Understanding of cloud and container security, automation tooling, and frameworks such as OWASP and CIS Benchmarks.

Together, as owners, let’s turn meaningful insights into action.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because…

You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction.

Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansiv

e industry and technology expertise.

You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.

Come join our team—one of the largest IT and business consulting services firms in the world.